Watson described the purpose of psychology as: âTo predict, given the stimulus, what reaction will take place; or, given the reaction, state what the situation or stimulus is that has caused the reactionâ (1930, p. 11). * All behavior is learnt from the environment.
Additional tests including penetration,solubility, and ductility are made on the residue. Cutback asphalt grades and tests There are several grades for each of the three types ofcutbacks â rapid curing (RC), medium curing (MC), andslow curing, (SC). The grades include 70, 250, 800, and3000.
Probably the most common modifier to asphalt emulsions is polymer additives. Polymers and polymer combinations are being modified constantly to enhance the various properties of the asphalt cement binder. Polymers can be used for any asphalt seal coat applications. Polymers generally used in the asphalt industry are either elastomeric (rubber like) or plastomeric (plastic like). The elastomeric polymers increase the elasticity and flexibility of the asphalt cement, while the plastomeric polymers improve the strength and the durability of the asphalt cement.